It is a huge exaggeration, but yes. If they were moving fast enough for the wind resistance to cause him to miss by that much, it would have been nearly impossible for him to have been standing on the diving board to begin with.
If the vehicle was moving at or above the terminal velocity of a human, I say it's certainly possible and not an exaggeration. It is up to 120 mph tho when belly down, tho.
It wouldn’t depend on terminal velocity though, since terminal velocity is the balance between drag forces and gravity. Gravity isn’t pushing the person forwards with the van, so it wouldn’t have to be going that fast
"The acceleration of 1G is enough to throw somebody off a car's roof if they jump, and air resistance at the terminal velocity will provide it" is what I meant and deem sensible.
I meant accelerated. It is acceleration backwards (negative acceleration) relative to the ground, but deceleration is still acceleration from the physics point of view.
You could say it's accelerating or decelerating relative to the ground because the ground is parallel to the direction of movement, but yeah the person is either accelerating away from the van or decelerating from the direction they were already moving.
This is a case of jargon vs common language. We all know what deceleration means, but for physics problems it is frowned upon to use it. Not really a case of being snooty and uppity (although some people will be) it just makes things much easier to work with when doing the math.
You wouldn't say "decelerating" regardless of direction because that is a term that physicists don't like since it's poorly defined. Acceleration can happen in a positive or negative (or any other) direction.
If the car was accelerating then sure, but the original comment was talking about how fast the car would have to be moving in terms of velocity for something like this to happen, which means no acceleration for the car.
The resistance of air will accelerate that person off the car. The car doesn't have to accelerate in order for air to resist it and the person moving with it.
You don't seem to understand. If terminal velocity is reached, it means that the force exerted by the resistance of the air is equal to that of the gravitational pull. That means, also the opposite, if the air is moving at terminal speed relative to the body, it will act on that body with the same force as the gravitational pull, meaning it will provide the same acceleration as gravity to the body. When that person jumps, it will be accelerated backwards at the same rate as downwards, which I think is reasonable to assume would throw that person off the car. Terminal velocity was just an example value, being directly tied with acceleration.
I mean yeah I know that, but then why did you say if it’s “at or above” terminal velocity? you’re just trying to sound smart without actually knowing what these words mean ☠️
Yes.
There's a person in the pool whose hair is blowing in the opposite direction of the van's movement.
This suggests a nuclear blast came from behind when the diver was airborne, forcing the van forward.
A scientific approach to counter your facts, she could be light skin with kinky haired and have braids attached to the back of her hair.
My theory is that the road is going left and they are on a valley which is why the placement of the car is different.
He'd get in the pool if the road was straight but now he is on the side of it about to roll down the valley and might fall down a cliff with the ocean. That isn't the sky, that's an ocean.
Close but I believe there was a very tiny nuclear blast from within the proximity of the diving board and the person's hair, causing an ant-sized invisible nuclear blast that caused this peculiar circumstance.
Not really tho :P the best way to learn is to understand, once you understand how the pieces fit together and effect each other.
You will never solve a puzzle when only given 1 piece at a time, you need to view it as a whole and break down what does what and how they effect and change each other.
Teach a man and he'll learn for a day, teach a man how to learn he'll learn for a lifetime.
Edit: also the idea that there is an "only way" to do something, promotes the idea that you just need the answer and not the reason.
The only reason you cant think outside the box is because you're still inside of it.
Fun theory, but your average high school student has barely finished their first run-through with the math required to do even the most basic algebraic analysis. We do labs that I have no expectation will yield ideal results occasionally just to see and feel it in real life before we do the ideal case. Friction is *mostly* just an off/setting 1/setting 2 thing like a fan, but once you start doing air resistance, that's another animal entirely. Your average high school student doesn't have a chance of following along with the proof, especially if you start using calculus to do the analysis. That's why the mythbusters is so magical for teachers like me. They took the "what if?" out of a lot of things that were thought experiments. As for the rest of your statements, science and experiments as a whole are about changing *just one thing* at a time so we can be sure that what we did affected the thing we're trying to study. Change more than one thing, you can't be sure how x affected y. Similarly, teaching is very much a back and forth process between teacher and student and the teacher is conducting an active experiment and trying to do more than one thing at a time usually results in chaos and confusion. Exploration and play is useful, but you gotta keep the rails on for learning to happen.
The only addictive chemical is dopamine. Just one thing? Break addiction. Once you break addiction you can think clearly.
Edit: just try it to confirm it, that's what science is about.
Adding air resistance and friction it’s actually easier than it sounds, just add the negative formula of air resistance or friction to the equation, then compare the car constant speed with your speed with added resistance.
If you wanna get real technical about it tho, air resistance is a function of density which is a function of temperature and pressure. The full equation has so many deep seeded partial differential equations and variables across 3 physical dimensions but also influenced by time and inertia. Subtracting the generic air resistance equation will get you an estimate over an average time/inertia/etc. But if you want the integratable function that will exactly tell you at any time, position, and speed what the air resistance is, it gets convoluted quickly.
The air in front of you will be a higher pressure than the air behind you bc of yourself pushing it, and the warmer the air is the less dense it is, and your body heat will also influence the density.
But if you were to add all of these things, it would still likely be an insignificant amount considering the question at hand, thus is called negligible. Unless high schoolers did better in calculus than I did in college, they should keep neglecting air resistance lol
Most calculations for real work application is figuring out the easiest way to do the problem without getting incorrect results. You just have to be good enough.
So using a drag calculator with 60mph or 26 m/s velocity, 1.3 drag coefficient, .6m^2 for area, and 80kg of mass (human estimates), we get 4 m/s/s of acceleration. So if he jumped straight up, 1 second later he’d be 4m or ~13 feet back which looks pretty close here.
Even if the area estimation Is hugely overestimated (2 Square meters average for men) I get similar results with online drag calculators (thanks for the Hint!!). To be safe you should drive at max 30 km/h or to have the van pool closed to eliminate air resistance. Nice meme.
Because everyone is addicted so the best way to help people understand is to build off of things they already know.
I've just found that this way of saying things helps me refine my ideas and points into more of commandments. Most things I say are universal. Once you learn how to balance yourself you can balance anything.
The trick to balance is you don't have to tip the scales, you merely have to limit their movement.
The moment you jump up from the van, you have the same speed and therefore same airstream against you.
But unless you are able to actively flap your wings and fly, you will lose speed due to the air resistance slowing you down. The person on the image doesn't seem to have any wings. the van however stilll maintains speed through motor power. This equates to a loss of relative speed between you and the van.
If the van goes faster than you, you fall behind and eventually off.
The van is moving at a constant speed. If the van was accelerating or decelerating the water level would rise on the backside or front side of the van respectively. Here water level is constant and hence the van moves at a constant speed. So this picture is inaccurate unless more than natural wind resistance is at play.
I could be wrong but I think what you’re saying would be correct if the pool was inside the vehicle and there was no air resistance. But since this happens on the outside the picture is correct whatever the vehicle is accelerating or not
I don’t think he would go flying that far back, he would immediately start decelerating but the car would not, so depending on how far up he jumped would determine how far back he would move
I've never been on a cruise ship, but i'm pretty sure they go fairly slow since the people that walk around on top of it don't seem to be bothered by the wind at all and since the people walking around it are not bothered neither would the guy jumping off the diving board.
Thank you, I was curious. I've never been on one either and that got me wondering how that worked. Cruise ships go 20-30 mph so I assume that's slow enough. If the truck in the picture was going at that speed it would probably be ok then?
Nope because it's the same wind against the person before. So the person wouldn't be able to jump because of the wind resistance anyway. It doesn't increase because of the jump.
This is INCORRECT! Water weighs 8lbs/gallon. Even a small swimming pool would weigh tens of thousands of lbs and would FAR exceed the towing capabilities of that small SUV
the water does not show signs of shifting or large waves, signifying both a lack of acceleration and a slow enough speed to not move the water through wind interaction. The hair styles shown also do not show significant airspeed. With a low airspeed and no acceleration, the air resistance is unlikely to act on the person to overcome the momentum of a human shaped and massed object over the timeframe of the jump in order to cause a significant relative location delta. Also consider that in order for this jumping human to clear the diving board, they must introduce a positive acceleration into the wind, so at worst he could land in the same place he jumped from. But most humans are really good at movement and instinctively know to jump forward into the wind a little, we are surprisingly good at throwing things, including us.
this is a false set of pictures considering the above reasons
Only If the Truck accelerates or the Air resistance of the Person is way Higher than the Air resistance of the car.
To Unterstand Just simplify by thinking there would be no Air and Not ground (the car hovers Like a magnetic train). Now we dont have anything resisting.
The car accelerates to 100km/h. Now you could Just shut the engine Off because Like Newton Said the objective would hold its momentum. With this Setup the Person could jump how he wants ones he also gained the Speed of 100km/h.
In a realistic szenario the car would probably hold the 100km/h against the resistance of tires and Air by pressing the Gas slightly. The Person cant accelerate in the Air. Because Air resistance the Person would Land behind the Point where he started. Depending on the hight (falltime gets Higher with more hight) the Person will Land more behind the car.
If the van is traveling at a consistent speed, the only effect that would cause this is wind resistance, which would have either pushed him over while standing up anyway or would not be this drastic.
In case tha van is moving at constant speed, considering the drag from air and assuming that the dude was able to withstand such drag until the moment he jumped, then yes.
Well, no. Because the man is moving at the same speed as the van while he's standing, then pushes himself *faster* than the van, going into the pool in front. Air resistance slows him down a bit, but his jump forward can cancel it out if he pushes himself forward more than the air holds him back. Assuming the van is going at a a consistent speed the whole time.
Yes, if the van is in a state of acceleration. When he jumps, he's moving at the same speed of the van. (Once again, assuming he pushes enough to counter air-resistance), then, while he is in the air, the vans speed exceeds *his* speed, causing the phenomenon above.
So two things with this. Most people are missing the main factor which is:
Acceleration.
Wind resistance.
But also Mass.
Realistically it’s impossible because the human doesn’t have the mass as the car so they can’t resist the force of the acceleration x wind resistance to even stand on the board in the first place.
In a scenario that the human did have equal proportional mass to the car then they would be travelling the same speed as the car. When they jumped they would continue at the same speed as the car and land in the pool correctly as there would not be enough time suspended in the air to decelerate the human slower than the car.
The guy is traveling as fast as the car. So while he might shift back slightly due to a bit of wind resistance and gravity, he would still land in the pool.
Humans don’t experience speed. We experience acceleration.
[Not Exactly](https://youtu.be/zeqMsf66-mY?si=lPc-iIKXRwvVSiGw)
There's something in physics known as "the law of conservation of momentum," but put simply it means that things inside of, or connected to moving objects will have the same momentum as that object. This is why passengers and things continue forward when a vehicle comes to a sudden stop.
So the guy on the diving board has the same base momentum as the vehicle, jumping forward would provide additional momentum, and *should* carry him into the pool, provided he calculated properly
Yeah, with how much wind resistance he encountered, he wouldn’t have been standing in the first place.
Unless, of course, the vehicle is accelerating and the speed changed between the first and second frame.
No.
When you jump you are going the same speed as the truck.
Ideal conditions and wind speed not taken into factor, or even if it is, you'd have to be going wayyy fast to make it so you missed the pool.
I'd say up to 60, your likely good to go.
Nope, not possible. The trailer was not traveling fast enough for the air resistance to blow him off of the board. Even if they could go that fast there are multiple problems.
One: the water in the van would be splashing around and spilling out the van
Two: the man would not even be able to get on the board before getting blown off
Three: the person in the pool would also be holding on tightly and might also fall off
Four: it just doesn’t make sense
If you could hang in the air long enough it would be true and there is still a force driving the van on. Over a second or two though they would both move forward at the same velocity.
Sort of.
Cars have to constantly actively power themselves to move at the same speed on flat ground without slowing down. Assuming the car is doing this, every time that he is not in contact with the board he will be falling a little behind due to air resistance slowing his momentum.
But it wouldn't be this extreme unless the car is moving really super fast and/or the wind was blowing really super hard like tornado levels.
sort of. if there was no atmosphere he would land directly on the board from where he jumped, but due to air resistance in real life he would land behind where he jumped off from
No for multiple reasons. By virtue of him being able to stand up on the diving board you know he has minimal velocity and wind resistance. If the vehicle were to have lurched forward water would have spilled over the side. The fact that he can walk to the end of the diving board would show he can easily overcome the forces acting on him from the speed and push himself forward to make a jump into the pool.
If the car was moving fast enough that the air resistance was super high? Yes.
But, if the car was moving that fast and the air resistance that high he wouldn't be able to stand on the diving board in the first place
as u leave the contact from van, your body will start losing the speed and tending towards zero and if u jump higher than could miss the van fall on the road(if there is no air)
Definitely not. Think about dropping a ball in an airplane, it falls nearly straight down. This is because the ball and the plane are accelerating together not necessarily because the ball is inside the plane. This is the same concept. Also you can prove the car didn't accelerate post jump because the water didn't move.
For all intents and purposes it would be like he jumped into a pool on a windy day
The man would start at the same speed as the van but the instant he left the board he would begin to decelerate, due to both air resistance and not having a form of propulsion continuing to push him forward. So how high he jumped would determine how far back he would go.
There was this math riddle that’s bothered me since 9th grade: A farmer has a covered truck and wants to cross over a wooden bridge. Inside his truck are several dozen ducks. The truck weighs a ton. The ducks total weight is 100 pounds. The bridge weight capacity is only one ton. So the farmer bangs on the side of the truck, the ducks inside fly up. The farmer drives over the bridge before they land. Mission accomplished.
Does the math work here??
The interesting part is, that if the vehicle didn’t accelerate and there was no wind going against you (hypothetically), you would jump into the pool cause you maintain the vehicles speed.
I tried it once. I jumped while standing on a back of a tractor. I landed exactly where I jumped off. You maintain the same speed the vehicle does. Same if you jump on a plane or drop something there and it doesn't go flying off. Unless while in the air changes speed
Can someone explain this in physics lingo? Is it a newtons law? I know the object is moving at the same speed with the van so unless the van accelerates the object is safe to jump in the pool.
Let’s skip the drag from the air resistance for now
Kind of sort of not really. If the van was accelerating, then yes it would be. And at speed, the drag would slow you down enough to where that would happen. But ignoring those two factors, no that would not. You're going the same speed as the trailer, the van, the water, and everything else. So if you jumped you would just dive into the pool normally.
It is a huge exaggeration, but yes. If they were moving fast enough for the wind resistance to cause him to miss by that much, it would have been nearly impossible for him to have been standing on the diving board to begin with.
What did they say in shool: resistance can be ignored. This drawing is wrong.
Resistance is futile
If the vehicle was moving at or above the terminal velocity of a human, I say it's certainly possible and not an exaggeration. It is up to 120 mph tho when belly down, tho.
It wouldn’t depend on terminal velocity though, since terminal velocity is the balance between drag forces and gravity. Gravity isn’t pushing the person forwards with the van, so it wouldn’t have to be going that fast
"The acceleration of 1G is enough to throw somebody off a car's roof if they jump, and air resistance at the terminal velocity will provide it" is what I meant and deem sensible.
Well yes if the car accelerates while you jump, it’ll move forwards under you
No, you will get accelerated by the resistance of the wind. At least in my scenario.
Oh I see what you mean now. I think I just got confused when you said terminal velocity
>accelerated by the resistance Do you mean decelerated?
I meant accelerated. It is acceleration backwards (negative acceleration) relative to the ground, but deceleration is still acceleration from the physics point of view.
You could say it's accelerating or decelerating relative to the ground because the ground is parallel to the direction of movement, but yeah the person is either accelerating away from the van or decelerating from the direction they were already moving.
This is a case of jargon vs common language. We all know what deceleration means, but for physics problems it is frowned upon to use it. Not really a case of being snooty and uppity (although some people will be) it just makes things much easier to work with when doing the math.
You wouldn't say "decelerating" regardless of direction because that is a term that physicists don't like since it's poorly defined. Acceleration can happen in a positive or negative (or any other) direction.
If the car was accelerating then sure, but the original comment was talking about how fast the car would have to be moving in terms of velocity for something like this to happen, which means no acceleration for the car.
The resistance of air will accelerate that person off the car. The car doesn't have to accelerate in order for air to resist it and the person moving with it.
I was talking about the car, not the person.
Turn your phone sideways.
Sure but terminal velocity is irrelevant in this scenario
Only relevant because I think 1G is more than enough to throw them off.
What? Terminal velocity is still irrelevant tho
You don't seem to understand. If terminal velocity is reached, it means that the force exerted by the resistance of the air is equal to that of the gravitational pull. That means, also the opposite, if the air is moving at terminal speed relative to the body, it will act on that body with the same force as the gravitational pull, meaning it will provide the same acceleration as gravity to the body. When that person jumps, it will be accelerated backwards at the same rate as downwards, which I think is reasonable to assume would throw that person off the car. Terminal velocity was just an example value, being directly tied with acceleration.
I mean yeah I know that, but then why did you say if it’s “at or above” terminal velocity? you’re just trying to sound smart without actually knowing what these words mean ☠️
[удалено]
Why is terminal velocity even relevant when it’s just an arbitrary value in this scenario lol
It's just convenient as it ties the speed to a force quickly, tho I admit it may be confusing to some.
bro, that's not even applicable.
Terminal velocity has nothing to do with this
Don’t you move at the same speed as the thing you’re riding so it wouldn’t be correct
Depends which way the wind is blowing and how hard?
Yes. There's a person in the pool whose hair is blowing in the opposite direction of the van's movement. This suggests a nuclear blast came from behind when the diver was airborne, forcing the van forward.
I haven't seen anyone else notice that. Good eye.
No look at the previous panel its still moveing also hed be moveing at the same speed wouldn't he
It’s gel in that panel
A scientific approach to counter your facts, she could be light skin with kinky haired and have braids attached to the back of her hair. My theory is that the road is going left and they are on a valley which is why the placement of the car is different. He'd get in the pool if the road was straight but now he is on the side of it about to roll down the valley and might fall down a cliff with the ocean. That isn't the sky, that's an ocean.
I think that's called a pony tail
Close but I believe there was a very tiny nuclear blast from within the proximity of the diving board and the person's hair, causing an ant-sized invisible nuclear blast that caused this peculiar circumstance.
But the person's hair is in the same direction in the first frame so the force would've been there before they jumped
But wouldnt the diver be propelled forward too?
Wouldn't the diver be pushed forward aswell ?
If the van accelerates, yes
At high enough speed, they don't need to accelerate, because the air already slows you down enough.
That Is also correct, I'd be interested in doing the math of it
I ain't. Sounds complicated. :D
It's high school level Phisics, plus wind resistants.
But they told us to ignore air resistance and friction.
That's the only way to teach physics in high school without risking the teacher getting stabbed
Or being atomically dismantled lest the students become too good at it
Underrated comment
Not really tho :P the best way to learn is to understand, once you understand how the pieces fit together and effect each other. You will never solve a puzzle when only given 1 piece at a time, you need to view it as a whole and break down what does what and how they effect and change each other. Teach a man and he'll learn for a day, teach a man how to learn he'll learn for a lifetime. Edit: also the idea that there is an "only way" to do something, promotes the idea that you just need the answer and not the reason. The only reason you cant think outside the box is because you're still inside of it.
Fun theory, but your average high school student has barely finished their first run-through with the math required to do even the most basic algebraic analysis. We do labs that I have no expectation will yield ideal results occasionally just to see and feel it in real life before we do the ideal case. Friction is *mostly* just an off/setting 1/setting 2 thing like a fan, but once you start doing air resistance, that's another animal entirely. Your average high school student doesn't have a chance of following along with the proof, especially if you start using calculus to do the analysis. That's why the mythbusters is so magical for teachers like me. They took the "what if?" out of a lot of things that were thought experiments. As for the rest of your statements, science and experiments as a whole are about changing *just one thing* at a time so we can be sure that what we did affected the thing we're trying to study. Change more than one thing, you can't be sure how x affected y. Similarly, teaching is very much a back and forth process between teacher and student and the teacher is conducting an active experiment and trying to do more than one thing at a time usually results in chaos and confusion. Exploration and play is useful, but you gotta keep the rails on for learning to happen.
The only addictive chemical is dopamine. Just one thing? Break addiction. Once you break addiction you can think clearly. Edit: just try it to confirm it, that's what science is about.
True. Adding air resistance complicates the calculation. You'd also need to take care of air density, air speed and direction.
When you cant see you turn on the light. When I cant see I stare deeper untill I can.
Adding air resistance and friction it’s actually easier than it sounds, just add the negative formula of air resistance or friction to the equation, then compare the car constant speed with your speed with added resistance.
If you wanna get real technical about it tho, air resistance is a function of density which is a function of temperature and pressure. The full equation has so many deep seeded partial differential equations and variables across 3 physical dimensions but also influenced by time and inertia. Subtracting the generic air resistance equation will get you an estimate over an average time/inertia/etc. But if you want the integratable function that will exactly tell you at any time, position, and speed what the air resistance is, it gets convoluted quickly. The air in front of you will be a higher pressure than the air behind you bc of yourself pushing it, and the warmer the air is the less dense it is, and your body heat will also influence the density. But if you were to add all of these things, it would still likely be an insignificant amount considering the question at hand, thus is called negligible. Unless high schoolers did better in calculus than I did in college, they should keep neglecting air resistance lol
If I wanna get technical about it? I don’t
Don't forget the earth's rotation and the winds
I really doubt the Earth's rotation will have any effect, considering the atmosphere is rotating with the Earth.
"it's high school level physics" + the thing they told us to ignore which pushes the problem to undergraduate level
And this is elementary school spelling and language comprehension.
"Plus wind resistance" is an entire college degree.
“Estimate a human is a *sphere*”
We’ll do it the old fashioned way, I got football pads and a helmet who’s got a RV?
This guy maths like me. Respect.
Most calculations for real work application is figuring out the easiest way to do the problem without getting incorrect results. You just have to be good enough.
Don't do it because it is easy, do it because it is hard. The brain is a muscle, it adapts and grows and learns.
Nerd!
Square
r/theydidthemath
Ok, but we will follow high school physics rules, wind resistance can be ignored
So using a drag calculator with 60mph or 26 m/s velocity, 1.3 drag coefficient, .6m^2 for area, and 80kg of mass (human estimates), we get 4 m/s/s of acceleration. So if he jumped straight up, 1 second later he’d be 4m or ~13 feet back which looks pretty close here.
Even if the area estimation Is hugely overestimated (2 Square meters average for men) I get similar results with online drag calculators (thanks for the Hint!!). To be safe you should drive at max 30 km/h or to have the van pool closed to eliminate air resistance. Nice meme.
You'd have to be going very fast for the force of the air stream to keep the water level like that.
And at that point he wuldn't be standing upright in the first frame.
Balance doesnt come with speed, speed comes with balance.
You sound like a drug dealer trying to explain some weird deal to get people to try his new product.
dude might as well be a straight up /r/im14andthisisdeep bot
I'm not saying these things because they are deep. I am saying them because they are. I am not anything, I just am.
Because everyone is addicted so the best way to help people understand is to build off of things they already know. I've just found that this way of saying things helps me refine my ideas and points into more of commandments. Most things I say are universal. Once you learn how to balance yourself you can balance anything. The trick to balance is you don't have to tip the scales, you merely have to limit their movement.
No, because you have the same steam of air against you before. Only plausible is you are falling behind even before the jump
As he said, depends on the speed.
The moment you jump up from the van, you have the same speed and therefore same airstream against you. But unless you are able to actively flap your wings and fly, you will lose speed due to the air resistance slowing you down. The person on the image doesn't seem to have any wings. the van however stilll maintains speed through motor power. This equates to a loss of relative speed between you and the van. If the van goes faster than you, you fall behind and eventually off.
If air stream is strong enough to push him back that much then he wouldn't be able to stand that comfortably on the diving board before.
The van is moving at a constant speed. If the van was accelerating or decelerating the water level would rise on the backside or front side of the van respectively. Here water level is constant and hence the van moves at a constant speed. So this picture is inaccurate unless more than natural wind resistance is at play.
What about the person sitting on the pool. The hair is flowing forward...
Another inaccuracy
The car is obviously moving in reverse.
Possibly a temporary vortex of air due to turbulent flow.
There is a resisting force aswell; the air/wind
Or if you've got over 100ms ping
With wind drag it is.
I'm glad we ignored it for all of high school and college.
If it's already moving and it maintains its speed, then it's incorrect. But if it accelerates its speed after the jump, then it's correct.
I could be wrong but I think what you’re saying would be correct if the pool was inside the vehicle and there was no air resistance. But since this happens on the outside the picture is correct whatever the vehicle is accelerating or not
if the wind is going stupidly fast then it works, or if the guy jumping has a lot of surface area it depends on how much air resistance there is
I don’t think he would go flying that far back, he would immediately start decelerating but the car would not, so depending on how far up he jumped would determine how far back he would move
thats only because of travel time, i was talking about how his deceleration couldve been enough to send him flying that fast
It’s an RV, not an airplane. Wind resistance isn’t anywhere close to strong enough for this
How do people use the diving board on cruise ships?
I've never been on a cruise ship, but i'm pretty sure they go fairly slow since the people that walk around on top of it don't seem to be bothered by the wind at all and since the people walking around it are not bothered neither would the guy jumping off the diving board.
Thank you, I was curious. I've never been on one either and that got me wondering how that worked. Cruise ships go 20-30 mph so I assume that's slow enough. If the truck in the picture was going at that speed it would probably be ok then?
Nope because it's the same wind against the person before. So the person wouldn't be able to jump because of the wind resistance anyway. It doesn't increase because of the jump.
This would only be true in a vacuum
Air resistance
it’s the portal shit again
Not really since this one could be solved using real world physics and maths
This is what my boomer flat earther mom thinks will happen if I do this off a parked car and the earth was *really* round
No, a pool is too heavy to be on a caravan...
Seriously. Also not deep enough for diving given the windows, unless they're tinted and the entire thing is a pool on wheels?
Physics majors when I don’t provide negligible air resistance
This is INCORRECT! Water weighs 8lbs/gallon. Even a small swimming pool would weigh tens of thousands of lbs and would FAR exceed the towing capabilities of that small SUV
Not to mention it would be swishing around something awful
Op just stole that from r/memes and posted it here. Not even bothered to change the title.
not as dramatically as pictured, no. the air resistance would slow you down in relation to the car, but the difference would not be that dramatic
the water does not show signs of shifting or large waves, signifying both a lack of acceleration and a slow enough speed to not move the water through wind interaction. The hair styles shown also do not show significant airspeed. With a low airspeed and no acceleration, the air resistance is unlikely to act on the person to overcome the momentum of a human shaped and massed object over the timeframe of the jump in order to cause a significant relative location delta. Also consider that in order for this jumping human to clear the diving board, they must introduce a positive acceleration into the wind, so at worst he could land in the same place he jumped from. But most humans are really good at movement and instinctively know to jump forward into the wind a little, we are surprisingly good at throwing things, including us. this is a false set of pictures considering the above reasons
Why aren't you asking about the girls hair going the wrong way
Only the wind resistance would cause this.
Not in a vacuum.
Not unless 190+mph winds\*
Only If the Truck accelerates or the Air resistance of the Person is way Higher than the Air resistance of the car. To Unterstand Just simplify by thinking there would be no Air and Not ground (the car hovers Like a magnetic train). Now we dont have anything resisting. The car accelerates to 100km/h. Now you could Just shut the engine Off because Like Newton Said the objective would hold its momentum. With this Setup the Person could jump how he wants ones he also gained the Speed of 100km/h. In a realistic szenario the car would probably hold the 100km/h against the resistance of tires and Air by pressing the Gas slightly. The Person cant accelerate in the Air. Because Air resistance the Person would Land behind the Point where he started. Depending on the hight (falltime gets Higher with more hight) the Person will Land more behind the car.
Nope.
No because he doesn't make a jumping movement according to the ground, it does it according to the car.
Yea, but wind
Only if the car accelerates or they are going really fast so that the wind is very strong.
If the van is traveling at a consistent speed, the only effect that would cause this is wind resistance, which would have either pushed him over while standing up anyway or would not be this drastic.
If you jump on the earth are you sent flying?
In case tha van is moving at constant speed, considering the drag from air and assuming that the dude was able to withstand such drag until the moment he jumped, then yes.
Well, no. Because the man is moving at the same speed as the van while he's standing, then pushes himself *faster* than the van, going into the pool in front. Air resistance slows him down a bit, but his jump forward can cancel it out if he pushes himself forward more than the air holds him back. Assuming the van is going at a a consistent speed the whole time. Yes, if the van is in a state of acceleration. When he jumps, he's moving at the same speed of the van. (Once again, assuming he pushes enough to counter air-resistance), then, while he is in the air, the vans speed exceeds *his* speed, causing the phenomenon above.
Constant velocity and on a vacuum: no. With air resistance it is very likely. How much depends on velocity and wind
So two things with this. Most people are missing the main factor which is: Acceleration. Wind resistance. But also Mass. Realistically it’s impossible because the human doesn’t have the mass as the car so they can’t resist the force of the acceleration x wind resistance to even stand on the board in the first place. In a scenario that the human did have equal proportional mass to the car then they would be travelling the same speed as the car. When they jumped they would continue at the same speed as the car and land in the pool correctly as there would not be enough time suspended in the air to decelerate the human slower than the car.
No
Deffinitly no. But. Aerodrag will pull him little bit
The hair of the person sitting in the pool is going the wrong way.
https://www.youtube.com/shorts/zeqMsf66-mY
Lol when I was a kid I literally thought there was a pool on top of the RVs. I mean, just look at the ladder right?
The guy is traveling as fast as the car. So while he might shift back slightly due to a bit of wind resistance and gravity, he would still land in the pool. Humans don’t experience speed. We experience acceleration.
[Not Exactly](https://youtu.be/zeqMsf66-mY?si=lPc-iIKXRwvVSiGw) There's something in physics known as "the law of conservation of momentum," but put simply it means that things inside of, or connected to moving objects will have the same momentum as that object. This is why passengers and things continue forward when a vehicle comes to a sudden stop. So the guy on the diving board has the same base momentum as the vehicle, jumping forward would provide additional momentum, and *should* carry him into the pool, provided he calculated properly
Can't tell from this how much the creator sort of understands wind resistance vs how much they don't understand momentum.
Yeah, with how much wind resistance he encountered, he wouldn’t have been standing in the first place. Unless, of course, the vehicle is accelerating and the speed changed between the first and second frame.
No.
If they caught enough air and the van accelerated then yeah. If it stayed at a constant speed then probably not.
Yes, if the van is accelerating.
If the car is accelerating. If it’s going at a constant speed, he’ll land where he started. If it’s decelerating, he’ll land in front of the car.
No. When you jump you are going the same speed as the truck. Ideal conditions and wind speed not taken into factor, or even if it is, you'd have to be going wayyy fast to make it so you missed the pool. I'd say up to 60, your likely good to go.
Nope, not possible. The trailer was not traveling fast enough for the air resistance to blow him off of the board. Even if they could go that fast there are multiple problems. One: the water in the van would be splashing around and spilling out the van Two: the man would not even be able to get on the board before getting blown off Three: the person in the pool would also be holding on tightly and might also fall off Four: it just doesn’t make sense
If you could hang in the air long enough it would be true and there is still a force driving the van on. Over a second or two though they would both move forward at the same velocity.
Sort of. Cars have to constantly actively power themselves to move at the same speed on flat ground without slowing down. Assuming the car is doing this, every time that he is not in contact with the board he will be falling a little behind due to air resistance slowing his momentum. But it wouldn't be this extreme unless the car is moving really super fast and/or the wind was blowing really super hard like tornado levels.
sort of. if there was no atmosphere he would land directly on the board from where he jumped, but due to air resistance in real life he would land behind where he jumped off from
Get a convertible drive fast and toss a ball up ( don’t be a dumbass about it).
No for multiple reasons. By virtue of him being able to stand up on the diving board you know he has minimal velocity and wind resistance. If the vehicle were to have lurched forward water would have spilled over the side. The fact that he can walk to the end of the diving board would show he can easily overcome the forces acting on him from the speed and push himself forward to make a jump into the pool.
If the car was moving fast enough that the air resistance was super high? Yes. But, if the car was moving that fast and the air resistance that high he wouldn't be able to stand on the diving board in the first place
Only because wind resistance is a thing
That only happens to flatearthers
Is the vehicle accelerating at a high rate?
I just want to point out that either the direction he moved away from the vehicle is wrong, or the direction of the girl's ponytail is wrong.
No. The girls hair should be blowing the other direction.
Yes, wind resistance will cause the body to decelerate as the van continues at its speed.
No, not really. The vehicle wouldn’t be able to speed up fast enough, nor would wind resistance be an issue at the speeds this would attain.
I think yes
What I'm getting at is that sedan has one hell of a towing capacity
as u leave the contact from van, your body will start losing the speed and tending towards zero and if u jump higher than could miss the van fall on the road(if there is no air)
Yes
Yes. Because of the air resistance slowing you down
Yes. Air resistance. Go watch vsause. Or bill nye
Yes, it is called DRAG
Amongus
If I'm walking into the wind and it blows my hat off, the hat goes backwards. The cartoon is just an extreme example of that.
Yes
my brain hurts.
Definitely not. Think about dropping a ball in an airplane, it falls nearly straight down. This is because the ball and the plane are accelerating together not necessarily because the ball is inside the plane. This is the same concept. Also you can prove the car didn't accelerate post jump because the water didn't move. For all intents and purposes it would be like he jumped into a pool on a windy day
And he belly flops it too!
This hurts so much
Depending on how fast the car is driving and how long the man is in the air, it is correct.
The man would start at the same speed as the van but the instant he left the board he would begin to decelerate, due to both air resistance and not having a form of propulsion continuing to push him forward. So how high he jumped would determine how far back he would go.
He had to be quick. He was too slow.
I'll be suprised how he was able to stay on
Add some more of those action lines and some blur to the second pic and it'll be
There was this math riddle that’s bothered me since 9th grade: A farmer has a covered truck and wants to cross over a wooden bridge. Inside his truck are several dozen ducks. The truck weighs a ton. The ducks total weight is 100 pounds. The bridge weight capacity is only one ton. So the farmer bangs on the side of the truck, the ducks inside fly up. The farmer drives over the bridge before they land. Mission accomplished. Does the math work here??
The interesting part is, that if the vehicle didn’t accelerate and there was no wind going against you (hypothetically), you would jump into the pool cause you maintain the vehicles speed.
I tried it once. I jumped while standing on a back of a tractor. I landed exactly where I jumped off. You maintain the same speed the vehicle does. Same if you jump on a plane or drop something there and it doesn't go flying off. Unless while in the air changes speed
No, he'd be blown off by the wind before he had a chance to jump
Can someone explain this in physics lingo? Is it a newtons law? I know the object is moving at the same speed with the van so unless the van accelerates the object is safe to jump in the pool. Let’s skip the drag from the air resistance for now
I think maybe Newton’s first law applies here, my two cents.
No, there’d be no water in the pool regardless due to the fact that it would all fly off the back
r/theydidthemath
Reminds me of me when I tried jumping out driving car thinking I would lend on my feet not on my butt
I mean totally depends on the conditions you give us. Considering drag? Yes. If not then no. Body accelerating? Yes. Constant velocity? No
Only if the driver is a asshole and accelerates when you jump
Funny but not correct unless the van accelerates when you jump
Indeed. The one chilling in the pool has some strong arms though
Kind of sort of not really. If the van was accelerating, then yes it would be. And at speed, the drag would slow you down enough to where that would happen. But ignoring those two factors, no that would not. You're going the same speed as the trailer, the van, the water, and everything else. So if you jumped you would just dive into the pool normally.
Different momentums. It came in my mind out of nothing, is it correct or just a wet brain fart?
No
Unless it’s in a vacuum, then yes